OFFSET
0,1
COMMENTS
Watson's second triple integral.
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..10000
Eric Weisstein's World of Mathematics, Watson's Triple Integrals
EXAMPLE
0.448220394388381432116385450017485249569392201708120730....
MATHEMATICA
RealDigits[(3*Gamma[1/3]^6)/(16*2^(2/3)*Pi^4), 10, 100][[1]] (* G. C. Greubel, Oct 26 2018 *)
PROG
(PARI) default(realprecision, 100); (3*gamma(1/3)^6)/(16*2^(2/3)*Pi^4) \\ G. C. Greubel, Oct 26 2018
(Magma) SetDefaultRealField(RealField(100)); R:= RealField(); (3*Gamma(1/3)^6)/(16*2^(2/3)*Pi(R)^4); // G. C. Greubel, Oct 26 2018
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Eric W. Weisstein, Jan 27 2004
STATUS
approved